CN113302805A - Signal cable - Google Patents

Signal cable Download PDF

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Publication number
CN113302805A
CN113302805A CN202080009195.XA CN202080009195A CN113302805A CN 113302805 A CN113302805 A CN 113302805A CN 202080009195 A CN202080009195 A CN 202080009195A CN 113302805 A CN113302805 A CN 113302805A
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CN
China
Prior art keywords
connector
housing
support member
main body
cable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202080009195.XA
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Chinese (zh)
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CN113302805B (en
Inventor
野泽铁文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Interactive Entertainment Inc
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Sony Interactive Entertainment Inc
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Filing date
Publication date
Application filed by Sony Interactive Entertainment Inc filed Critical Sony Interactive Entertainment Inc
Publication of CN113302805A publication Critical patent/CN113302805A/en
Application granted granted Critical
Publication of CN113302805B publication Critical patent/CN113302805B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/65912—Specific features or arrangements of connection of shield to conductive members for shielded multiconductor cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00—Communication cables or conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/18—Protection against damage caused by wear, mechanical force or pressure; Sheaths; Armouring
    • H01B7/22—Metal wires or tapes, e.g. made of steel
    • H01B7/228—Metal braid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/5804—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part
    • H01R13/5808—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable comprising a separate cable clamping part formed by a metallic element crimped around the cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
    • H01R13/582—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing
    • H01R13/5825—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable the cable being clamped between assembled parts of the housing the means comprising additional parts captured between housing parts and cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6592—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable
    • H01R13/6593—Specific features or arrangements of connection of shield to conductive members the conductive member being a shielded cable the shield being composed of different pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/02—Soldered or welded connections
    • H01R4/023—Soldered or welded connections between cables or wires and terminals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/187—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping combined with soldering or welding

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The present invention provides a signal cable, comprising: a connector (20) that receives a connection terminal (22) to be connected to a connection terminal included in the electronic apparatus, and has a housing (21) that is electrically connected to a frame ground of the electronic apparatus in a state in which the connector (20) is connected to the electronic apparatus; a cable body (10) including a ground connection line electrically connected to the housing (21); and a support member (40) having a tubular shape and having a higher rigidity than a surface of the cable main body (10), a connector-side end portion of the cable main body (10) being guided to an inside of the support member (40), a connector-side end portion of the ground connection line passing through the inside of the support member (40), the connector-side end portion of the ground connection line having a folded portion folded and arranged outside the support member (40), the housing (21) being fixed to the cable main body (10) with the folded portion sandwiched in the support member (40).

Description

Signal cable
Technical Field
The present invention relates to a signal cable having a connector for connecting electronic equipment and a method for producing the same.
Background
Generally, signal cables for transmitting/receiving signals according to various standards, such as High Definition Multimedia Interface (HDMI) (registered trademark), each include a connector for connecting to an electronic device. When a process of attaching a connector to a cable main body of such a signal cable is performed, some of the wires (e.g., braided wires) passing through the inside of the signal cable are handled in such a manner as to be electrically connected to a housing accommodating connection terminals of the connector. This process enables the conductive wire connected to the housing to be electrically connected to the frame ground of the electronic device in a state where the signal cable is connected to the electronic device.
Disclosure of Invention
Technical problem
In order to increase the degree of freedom of wiring of the cable main body, the inner conductor and the cover portion for covering the conductor are made of a material having high flexibility. For this reason, when a process of attaching the connector to the cable main body is performed, it is not easy to perform the process in such a manner that the conductive wire such as the braided wire is surely electrically connected to the housing of the connector. In particular, in the case where signal transmission/reception of a high-frequency clock is performed using a signal cable, insufficient contact between the wire and the connector housing causes occurrence of unnecessary electromagnetic radiation.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a signal cable which allows a wire thereof connected to a frame ground of an electronic device to be surely electrically connected to a housing of a connector, and a manufacturing method thereof.
Technical scheme
The signal cable according to the present invention includes: a connector to be connected to an electronic apparatus, the connector including a housing that accommodates connection terminals to be connected to connection terminals included in the electronic apparatus and is electrically connected to a frame ground of the electronic apparatus in a state in which the connector is connected to the electronic apparatus; a cable body including a ground connection line electrically connected to the housing; and a support member having a tubular shape and having a higher rigidity than a surface of the cable main body. Further, the end portion of the cable main body (the end portion of the cable main body on the side of the connector) is guided to the inside of the support member. The end of the ground connection line on one side of the connector includes a folded portion that is folded and disposed outside the support member. The housing is fixed to the cable main body in a state where the folded portion is sandwiched between the housing and the support member.
A production method of a signal cable according to the present invention is a production method for a signal cable including: a connector to be connected to an electronic apparatus, the connector including a housing that accommodates connection terminals to be connected to connection terminals included in the electronic apparatus and is electrically connected to a frame ground of the electronic apparatus in a state in which the connector is connected to the electronic apparatus; a cable body including a ground connection line electrically connected to the housing; and a support member having a tubular shape and having a higher rigidity than a surface of the cable main body. The production method comprises the following steps: a step of forming a folded portion by folding an end portion of the ground connection wire to an outside of the support member in a state where an end portion of the cable main body (the end portion of the cable main body is on a side of the connector) is guided to an inside of the support member, and a step of fixing the housing to the cable main body by crimping a coupling portion constituting the housing and formed on a side opposite to an end side of the connector in a state where the folded portion is sandwiched between the support member and the connection portion.
Drawings
Fig. 1 is a schematic diagram illustrating an external view of a signal cable according to an embodiment of the present invention.
Fig. 2 is a perspective view illustrating a state of a portion where a cable main body and a connector are coupled to each other in a signal cable according to an embodiment of the present invention.
Fig. 3 is an exploded perspective view illustrating a state of a portion of a signal cable in which a cable main body and a connector are coupled to each other according to an embodiment of the present invention.
Fig. 4 is a sectional view of a portion of a signal cable in which a cable main body and a connector are coupled to each other according to an embodiment of the present invention.
Fig. 5 is a sectional view of a portion where a cable main body and a connector are coupled to each other in a signal cable according to a modified example of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
Fig. 1 is a schematic diagram showing an external view of a signal cable 1 according to an embodiment of the present invention. Fig. 2 is a perspective view schematically showing a state of a part of the signal cable 1, in which the cable main body 10 and the connector 20 are coupled to each other, and showing a state in which a cover 24 described later is not attached. Fig. 3 is an exploded perspective view showing a state before the cable main body 10 of the signal cable 1 is coupled to the connector 20. Further, fig. 4 is a schematic sectional view showing a state resulting from cutting a portion where the cable main body 10 and the connector 20 are coupled to each other along the cable extending direction.
As shown in these figures, the signal cable 1 includes a linear cable main body 10, a connector 20 attached to one end of the cable main body 10, a connector 30 attached to the other end of the cable main body 10 (the other end is located on the side opposite to the connector 20 side), and a support member 40 provided in a portion where the cable main body 10 and the connector 20 are coupled to each other.
Hereinafter, as a specific example, a case where the signal cable 1 is an HDMI cable will be described. Further, hereinafter, the structure of the connector 20 attached to one end of the cable main body 10 will be described. Note here that the connector 30 attached to the other opposite end may have a structure similar to that of the connector 20, or the connector 30 may have a structure different from that of the connector 20.
The signal cable 1 interconnects two electronic devices and is used for signal transmission/reception between these electronic devices. Hereinafter, the electronic device to which the connector 20 is connected will be referred to as a first electronic device E1, and the electronic device to which the connector 30 is connected will be referred to as a second electronic device E2.
The cable main body 10 includes a covering portion 11, a braided wire 12, a drain wire 13, and a plurality of signal wires 14. Specifically, the braided wire 12, the drain wire 13, and the plurality of signal wires 14 are guided to the inside of the cable main body 10, and the covering portion 11 made of an insulating material covers the outside of these wires. That is, the cover part 11 forms an outer face of the cable main body 10. Furthermore, any other member than those already described herein, for example an aluminium foil, may be included inside the cover portion 11.
The braided wire 12 includes a plurality of fine wire-shaped wires braided into a mesh structure. The braided wire 12 is formed in a tubular shape as a whole and is disposed directly inside the covering portion 11. The material of the wire constituting the braided wire 12 may be various materials such as copper and aluminum magnesium alloy.
The drain wire 13 and the plurality of signal wires 14 are all guided inside the braided wire 12. The drain wire 13 is a single wire made of a conductive material such as an alloy of copper. Each of the plurality of signal lines 14 includes a conductive core wire passing through the center of each signal line 14 and a covering made of an insulating material and covering a surrounding area of the conductive core wire, and the conductive core wire is electrically connected to a connection terminal 22 included in the connector 20. The first electronic device E1 and the second electronic device E2 transmit/receive signals to/from each other via the plurality of signal lines 14.
In the present embodiment, the braided wire 12 and the drain wire 13 are in contact with and electrically connected to the housing 21 of the connector 20, which will be described later. With this configuration, next, when the connector 20 is connected to the first electronic device E1, the braided wire 12 and the drain wire 13 are electrically connected to the frame ground of the first electronic device E1. Further, the braided wire 12 and the drain wire 13 extend from the connector 20 side end to the opposite side end of the cable main body 10, and are electrically connected to the shell of the connector 30 at the opposite side ends. In particular, the connector that electrically connects the drain wire 13 having a relatively low impedance to both ends of the signal cable 1 enables common grounding of two electronic devices connected to each other via the signal cable 1. Note that, hereinafter, a wire electrically connected to the housing 21 of the connector 20 among wires guided to the inside of the cable main body 10 will be referred to as a ground connection wire. In the present embodiment, both the braided wire 12 and the drain wire 13 are used as the ground connection wires.
The connector 20 includes a housing 21, a plurality of connection terminals 22, a housing 23, and a cover 24. In the present embodiment, it is assumed that the connector 20 is a plug connector and is connected with the first electronic device E1 by being inserted into a receptacle connector included in the first electronic device E1.
The housing 21 includes three members, i.e., an insertion portion 21a inserted into the connector of the first electronic device E1 and connected to the frame ground thereof when the connector 20 is connected to the first electronic device E1, a front portion 21b for supporting the insertion portion 21a, and a rear portion 21c including a coupling portion 21d to be coupled to the cable main body 10. Each of these three members is formed in an approximately tubular shape by using a material having conductivity. The insertion portion 21a is inserted into an opening provided in a side of the front portion 21b, the side being located on an end side of the connector 20 (i.e., a side of the connector 20 connected to the first electronic device E1). Further, the opening provided on the side of the front portion 21b on the cable center side (i.e., the side opposite to the side where the connector 20 is connected to the first electronic device E1) is fitted into the opening provided on the side of the rear portion 21c on the end side of the connector 20. By these configurations, it can be derived that the housing 21 has a tubular shape in which the side faces thereof are formed seamlessly as a whole. Note here that in a state where the three members are joined, the housing 21 has openings on the connector-end side and the cable center side, but has no opening in an intermediate portion other than the connector-end side opening and the coupling portion 21 d. This configuration allows the housing 21 to function as a shield case that shields a space included in the housing 21, the space including a portion where the signal line 14 is connected to the case 23. Further, the connector-end side opening of the insertion portion 21a is blocked by a housing 23 described later. Further, by being crimped together with the braided wire 12, the coupling portion 21d provided on the cable center side shields unnecessary electromagnetic radiation occurring from the inside of the housing 21, as described later.
A housing 23 made of resin is provided inside the insertion portion 21a, and the plurality of connection terminals 22 are accommodated inside the housing 23. In a state where the connector 20 is connected to the first electronic device E1, each of the connection terminals 22 is electrically connected to a corresponding one of the signal lines 14 by soldering or the like, and is electrically connected to a corresponding connection terminal provided in the connector of the first electronic device E1. Note that, for the sake of simplicity, fig. 4 shows only two signal lines 14 connected to two connection terminals 22 provided on the upper and lower sides. As shown in fig. 4, the resin 21e is filled in the rear portion 21 c. With this configuration, the peripheral area of the cable center-side portion of the housing 23, which includes the connection portion for the signal line 14, is protected by the resin 21 e.
A coupling portion 21d to be coupled to the cable main body 10 is provided on the cable center side of the rear portion 21 c. The coupling portion 21d has substantially the same tubular shape as the cable main body 10 in a cross-sectional view, and has an inner diameter larger than an outer diameter of a support member 40, which will be described later.
The cover 24 is a member for covering a portion other than the insertion portion 21a (i.e., the cable main body 10-side portion including the coupling portion 21 d) inside the housing 21. The cover 24 is made of an insulating material such as resin. For example, after the outer case 21 is fixed to the cable main body 10 by a method described later, the cover 24 may be formed by filling resin in a surrounding area of the outer case 21.
The support member 40 is a member having a tubular shape, and is made of a conductive material such as iron. Specifically, the support member 40 may be formed by using, for example, a steel plate. Further, the support member 40 may be formed by using a member obtained by plating a different kind of metal material on the surface of the base material. The support member 40 preferably has higher rigidity than the cover part 11 provided on the surface of the cable main body 10. Further, the support member 40 preferably has the same or higher rigidity as the coupling portion 21d of the housing 21. Note that the shape of the support member 40 is not particularly limited as long as the shape can surround the outer periphery of the cable main body 10 in a sectional view in a state where the support member 40 is fixed to the cable main body 10. For example, the support member 40 may have a shape in which a portion of a side thereof is cut by a slit formed along the longitudinal direction. In this case, the support member 40 does not have a ring shape but has a C-letter shape in a cross-sectional view.
The inner diameter of the support member 40 is larger than the outer diameter of the cable main body 10, and the end of the cable main body 10 on the side connected to the connector 20 is introduced into the inside of the support member 40. One end of the braided wire 12 on the connector 20 side protrudes from the end of the covering portion 11, and the protruding portion is folded outward to form a folded portion 12 a. The folded portion 12a is disposed more outside than the outside face of the support member 40. Further, the end of the drain wire 13 on the connector 20 side also protrudes from the end of the covering portion 11, and the protruding portion is folded to the outside of the support member 40 to form a folded portion 13 a. The folded portion 13a of the drain wire 13 is disposed further outside than the support member 40 and the folded portion 12a of the braided wire 12.
Here, an example of a step of assembling the outer shell 21 and a step of coupling the outer shell 21 to the cable main body 10, which are part of a process of producing the signal cable 1, will be described. First, in a state where the end portions of the cable main bodies 10 are guided inside the supporting member 40 and inside the rear portion 21c, the end portions of the individual signal wires 14 are soldered to the respective contact points exposed on the rear portion of the housing 23. These contact points are coupled to the connection terminals 22 provided on the end side of the connector 20 inside the housing 23. In this state, the respective ends of the braided wire 12 and the drain wire 13 are folded to the outside of the support member 40 to form the folded portion 12a and the folded portion 13 a. Here, at a stage where the cable main body 10 has been introduced into the inside of the support member 40, the support member 40 may be fixed to the cable main body 10 by a crimping process such as a swaging process. Further, as described above, in the case where the slit is formed on the side surface of the support member 40, performing such swaging process on the support member 40 allows the support member 40 to have an annular shape in a cross-sectional view and to enter a state of surrounding the outer circumference of the cable main body 10.
Thereafter, the rear portion 21c of the outer shell 21 is fixed to the cable main body 10 by a crimping process such as a swaging process. Specifically, in a state where the support member 40 and the cable main body 10 are guided to the inside of the coupling portion 21d, pressure is applied to the coupling portion 21d from the outside. This process causes the rear portion 21c to be fixed to the cable main body 10.
The portion where the crimping process is performed is a portion where the support member 40, the folded portion 12a of the braided wire 12, and the folded portion 13a of the drain wire 13 are disposed outside the covering portion 11 of the cable main body 10. That is, in a state where the drain wire 13 and the braided wire 12 inside the cable main body 10, the covering portion 11, the support member 40, the folded portion 12a of the braided wire 12, the folded portion 13a of the drain wire 13, and the coupling portion 21d of the shell 21 are stacked in order in the diametrical direction from the center to the outside of the cable main body 10, the pressing force is applied from the outside of the coupling portion 21d toward the center in the diametrical direction of the cable main body 10. This process allows the rear portion 21c to be coupled and fixed to the cable main body 10. Note that the block arrows of fig. 2 indicate the positions where the crimping process is performed.
As described above, since the support member 40 has higher rigidity than the cover portion 11, when the crimping process is performed, the folded portion 12a of the braided wire 12 is pressed against the inner face of the coupling portion 21d by strong pressure while being supported by the support member 40. This process brings the folded portion 12a into a state of being sandwiched between the support member 40 and the coupling portion 21d, and enables the braided wire 12 to be brought into close contact with the outer case 21 and reduce the electrical resistance therebetween, as compared with the case where the support member 40 is not present. Similarly, the folded portion 13a of the drain wire 13 is also pressed against the inner face of the coupling portion 21d while being supported by the support member 40, and is in a state of being sandwiched between the support member 40 and the coupling portion 21 d. Through this process, the drain wire 13 is also electrically connected to the housing 21 through a relatively small resistance.
Here, the length of the support member 40 in the extending direction is longer than the length of the coupling portion 21d in the same direction. Further, when the crimping process of the coupling portion 21d is performed, the crimping process is performed in a state in which adjustment has been made such that the position of the end portion of the support member 40 on the cable center side (i.e., the side opposite to the end side of the connector 20) is located at a position closer to the cable center side than the position of the end portion of the coupling portion 21 d. With this configuration, as shown in fig. 2 and 4, in a state where the outer shell 21 is fixed to the cable main body 10, the end portion of the support member 40 on the cable center side protrudes further than the coupling portion 21d by the width d. Assuming that the crimping process is performed in a state where the support member 40 is located at a position more inward than the coupling portion 21d, there may be a case where the support member 40 is shifted to a position excessively more inward, and the position where the crimping process is to be performed is misaligned with the position where the support member 40 exists. In this case, the ground connection line cannot be sandwiched between the support member 40 and the coupling portion 21d any more. Therefore, in the present embodiment, the manner in which the crimping process is performed after making an adjustment so that the end portion of the support member 40 is located at the position closer to the cable center side than the position of the coupling portion 21d enables the support member 40 to be surely present at the position where the crimping process is to be performed. Further, performing the crimping process at such a position in a state where the cover 24 is not present causes the support member 40 to protrude from the coupling portion 21d of the housing 21, and therefore, after the crimping process is completed, it is possible to confirm that the position of the support member 40 is not misaligned by eye inspection or any other measurement method, thereby making management of the production process easy.
Note that any method capable of confirming that the positional misalignment of the support member 40 does not occur does not necessarily require that the support member 40 have a portion protruding with respect to the coupling portion 21d in the side view. For example, a method of disposing the respective cable center side ends of the support member 40 and the coupling portion 21d to be flush with each other or any other similar method may be employed so that the cable center side end of the support member 40 has a portion exposed at the cable center side opening of the rear portion 21 c. Even with such a configuration as described above, it is possible to confirm that the positional misalignment of the support member 40 does not occur by an eye check after the completion of the crimping process.
Further, in order to electrically connect the braided wire 12 and the drain wire 13 to the housing 21 through a small resistance, the ends of these ground connection wires may be welded to the coupling portion 21d of the housing 21. In the example of fig. 4, a welding portion 13b formed to further protrude from a portion sandwiched between the coupling portion 21d and the support member 40 is formed at an end side of the folded portion 13a of the drain wire 13. Since the end of the folded portion 13a is further folded outward, the welded portion 13b is provided on the outer face side of the coupling portion 21 d. Similarly, the end of the folded portion 12a of the braided wire 12 is also folded further outward to form a welded portion 12 b. The soldering portions 12b and 13b are soldered to the coupling portion 21d after the crimping process by the solder 41. Note that fig. 2 shows a state before such welding is performed. Further, in the above, the configuration in which both the braided wire 12 and the drain wire 13 are soldered has been described, but all the ground connection wires may not necessarily be soldered, and for example, only the drain wire 13 may be soldered.
In a state where the above-described crimping process and welding have been completed, the resin 21e is filled into the rear portion 21 c. Further, the insertion portion 21a is introduced into the front portion 21b from the connector end side, and the front portion 21b is inserted to be fitted into the rear portion 21 c. Through this process, the insertion portion 21a, the front portion 21b, and the rear portion 21c are joined, and the housing 21 is formed. Further, thereafter, the cover 24 is formed by filling resin so that the resin material covers the entire coupling portion 21d and the portion constituting the support member 40 and protruding from the coupling portion 21 d. In particular, one end of the cover 24 on the cable center side (i.e., the side opposite to the end side of the connector 20) is located at a position closer to the cable center side than the cable center side end of the support member 40. This configuration brings the cable center side end face of the support member 40 into contact with the face of the cover 24 toward the connector 20 side. Therefore, this configuration makes it possible to prevent the cable main body 10 from being pulled apart by causing the end face of the support member 40 to be held by the cover 24 when the cable main body 10 is pulled toward the cable center side with respect to the cover 24.
Note that the production process of the signal cable 1 according to the present embodiment may be carried out in a different order from the above-described order. Hereinafter, another example of the production process will be described. First, as in the example that has been described so far, the process of exposing the conductive wires of the end portions of the respective signal wires 14 is performed in a state where the end portions of the cable main body 10 are guided inside the supporting member 40 and inside the rear portion 21 c. Further, the insertion portion 21a of the housing 21 is attached to the case 23 accommodating the connection terminals 22, and then the ends of the respective signal lines 14 are soldered to contact points provided at the rear of the case 23. Thereafter, the front portion 21b of the housing 21 is fitted into the insertion portion 21a in a different order from the above example, and first, the resin 21e is filled into the surrounding area of the welded portion.
Thereafter, alignment of the support member 40 is performed. At this time, as described above, the support member 40 may be fixed to the cable main body 10 by a crimping process or the like. Further, similarly to the above-described example, the ends of the individual braided wire 12 and drain wire 13 are folded to the outside of the support member 40 to form the folded portion 12a and the folded portion 13 a. Thereafter, the rear portion 21c of the housing 21 is fitted into the front portion 21b to dispose the coupling portion 21d at a position overlapping with the support member 40. Further, the coupling portion 21d is pressed against the support member 40 and the cable main body 10 by a crimping process such as a swaging process to fix the rear portion 21c to the cable main body 10. This process enables the individual braided wire 12 and drain wire 13 to be electrically connected to the outer shell 21.
Thereafter, the welding portion 13b of the drain wire 13 and the welding portion 12b of the braided wire 12 may be welded to the coupling portion 21d as needed. Further, thereafter, the cover 24 is formed by filling resin so that the resin material covers the entire coupling portion 21d and the portion constituting the support member 40 and protruding from the coupling portion 21 d. The above-described process also enables the production of the signal cable 1 according to the present embodiment. Further, without being limited to the above example, the signal cable 1 according to the present embodiment may be produced according to other different processes.
The above-described signal cable 1 according to the embodiment of the present invention enables the ground connection line to be surely electrically connected to the housing 21 by providing the support member 40 and causing the support member 40 and the coupling portion 21d of the housing 21 to sandwich the ground connection line inside the cable main body 10 therebetween. This configuration can reduce unnecessary electromagnetic radiation occurring from a portion where the cable main body 10 and the connector 20 are coupled to each other.
Note that the embodiments of the present invention are not limited to the above-described embodiments. For example, in the above description, an example has been taken in which the signal cable 1 is an HDMI cable, but is not limited to this example, and the signal cable 1 may be any of various cables. In particular, in the case where the present invention is applied to a cable (e.g., a Universal Serial Bus (USB) cable) for signal transmission/reception using a relatively high-frequency clock, unnecessary electromagnetic radiation associated with such signal transmission/reception can be effectively reduced.
Further, the shapes and positional relationships in the above description with respect to the cable main body 10, the connector 20, and the support member 40 are only examples, and the cable main body 10, the connector 20, and the support member 40 may have shapes and positional relationships different from those shown in the drawings within a scope not departing from the gist of the present invention. For example, in the above description, a configuration has been adopted in which, after the end of the ground connection line has been folded once to the cable center side to be arranged on the outer face side of the support member 40, the end of the ground connection line is further folded again to the end side of the connector 20 to be arranged on the outer face side of the coupling portion 21d, and the soldering portion arranged on the outer face side of the coupling portion 21 is soldered to the coupling portion 21 d. Note, however, that the configuration is not limited to the above, and the end of the ground connection line may be formed as a welded portion in a state of extending straight without being folded to the outer surface side of the coupling portion 21 d. Fig. 5 is a diagram showing a state of the ground connection line in a soldered state in the above-described case, and, like fig. 4, shows a state of a cross section of a portion where the cable main body 10 and the connector 20 are coupled to each other along the cable extending direction.
In the example of fig. 5, the width d2 of the portion constituting the support member 40 and protruding from the coupling portion 21d to the cable center side is larger than the width d of fig. 4. Further, the folded portion 12a of the braided wire 12 and the folded portion 13a of the drain wire 13 are both different from those of fig. 4 and are not further folded. The folded portion 12a and the folded portion 13a have portions that protrude and extend more than the cable center side end portion of the coupling portion 21 d. The end portions of the individual braided wire 12 and the drain wire 13 protruding with respect to the end of the coupling portion 21d serve as the welding portions 12b and 13 b. That is, the soldering is performed from the outer face of the coupling portion 21d to the outer face of the support member 40, and the solder 41 is formed to cover the soldering portion 12b and the soldering portion 13 b. With this configuration, the end portions of the braided wire 12 and the drain wire 13 are electrically connected to the shell 21 via the solder 41. Note that, similarly to the case of fig. 4, this configuration may be implemented such that the braided wire 12 does not have a portion projecting more than the cable center-side end portion of the coupling portion 21d, and only the welding portion 13b of the end portion of the drain wire 13 is welded to the shell 21.
Further, the specific electrical characteristics, cross-sectional area, and the like of the material constituting the braided wire 12 may make it possible to sufficiently reduce the impedance between the connector 20 and the connector 30 by using only the braided wire 12. In this case, as the ground connection wire, only the braided wire 12 is sufficient, and the drain wire 13 may not be necessary. In this case, only the braided wire 12 is then sandwiched between the support member 40 and the coupling portion 21d, and electrically connected to the housing 21. Instead, the configuration may be implemented such that the ground connection wire includes only the drain wire 13, and the braided wire 12 is not connected to the shell 21. Further, the ground connection wire may include a wire having a different shape and different from the braided wire 12 and the drain wire 13.
[ list of reference marks ]
1: signal cable
10: cable main body
11: covering part
12: braided wire
13: drain wire
14: signal line
20: connector with a locking member
21: outer casing
21 a: insertion part
21 b: front part
21 c: rear part
21 d: coupling part
21 e: resin composition
22: connecting terminal
23: shell body
24: cover
30: connector with a locking member
40: supporting member
41: and (3) soldering.

Claims (10)

1. A signal cable, comprising:
a connector to be connected to an electronic apparatus, the connector including a housing that accommodates connection terminals to be connected to connection terminals included in the electronic apparatus and is electrically connected to a frame ground of the electronic apparatus in a state in which the connector is connected to the electronic apparatus;
a cable body including a ground connection line electrically connected to the housing; and
a support member having a tubular shape and having a higher rigidity than a surface of the cable main body,
wherein an end portion of the cable main body is introduced into the inside of the support member, the end portion of the cable main body being on one side of the connector,
the end of the ground connection line includes a folded portion, the end of the ground connection line being on one side of the connector, the folded portion being folded and disposed outside the support member, and
the housing is fixed to the cable main body in a state where the folded portion is sandwiched between the housing and the support member.
2. The signal cable according to claim 1, wherein an end portion of the supporting member includes a portion that protrudes more than an end portion of the housing, the end portion of the supporting member being located on a side opposite to an end side of the connector, the end portion of the housing being located on a side opposite to the end side of the connector.
3. The signal cable according to claim 1, wherein an end portion of the support member includes an exposed portion in an opening of the housing, the end portion of the support member being on a side opposite to an end side of the connector, the opening being on a side opposite to the end side of the connector.
4. A signal cable according to any one of claims 1 to 3, wherein the folded portion includes a welded portion on a side of an end of the folded portion that is not sandwiched between the housing and the support member, and the welded portion is welded to the housing.
5. The signal cable of claim 4, wherein an end of the folded portion is further folded outward and the welding portion is welded to an exterior face of the housing.
6. The signal cable according to claim 4, wherein the soldering portion is provided on an outside face of a portion constituting the supporting member and does not overlap with the housing, and is connected to the housing by a solder formed from the outside face of the housing to the outside face of the supporting member.
7. The signal cable of any one of claims 1 to 6,
wherein the housing includes a plurality of members coupled to each other, and the plurality of members in a coupled state to each other have a tubular shape, and
no opening is formed in the intermediate portion except for the end side of the connector and the portion fixed to the cable main body.
8. The signal cable according to any one of claims 1 to 7, wherein the ground connection line comprises a braided wire formed by braiding a plurality of conductive wires.
9. The signal cable of any one of claims 1 to 8, wherein the ground connection line comprises a drain wire comprising a single wire.
10. A production method for a signal cable including a connector to be connected to an electronic device, the connector comprising: a housing that accommodates connection terminals to be connected to connection terminals included in the electronic apparatus and is electrically connected to a frame ground of the electronic apparatus in a state where the connector is connected to the electronic apparatus; a cable body including a ground connection line electrically connected to the housing; and a support member having a tubular shape and having a higher rigidity than a surface of the cable main body, the production method including:
a step of forming a folded portion by folding an end portion of the ground connection line to an outside of the support member in a state where the end portion of the cable main body is guided to the inside of the support member, the end portion of the cable main body being on one side of the connector; and
a step of fixing the housing to the cable main body by crimping the coupling portion, with the folded portion sandwiched between the support member and the coupling portion constituting the housing and formed on a side opposite to an end side of the connector.
CN202080009195.XA 2019-01-21 2020-01-21 signal cable Active CN113302805B (en)

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US20220094115A1 (en) 2022-03-24
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JPWO2020153347A1 (en) 2021-11-11
CN113302805B (en) 2023-09-01

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